It’s not reasonable to implement something like that. Any gap would need to be <0.5cm in size in order for it to work on a 2.4GHz Bluetooth signal. Considering

It’s not reasonable to implement something like that. Any gap would need to be <0.5cm in size in order for it to work on a 2.4GHz Bluetooth signal. Considering that half of the passengers are likely forgetting to put their device in airplane mode - and they’re all using Bluetooth headphones, there is effectively zero risk to the airplane.